Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Boulder is from July, August, September. — consistent weather climate
☀️Pleasant
| Score | 20 | 18 | 23 | 45 | 69 | 89 | 91 | 92 | 93 | 67 | 29 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Cold | Pleasant | Pleasant | Pleasant | Pleasant | Cold | Cold | Polar |
| Temperature | -8–3°C | -9–4°C | -5–9°C | 0–14°C | 5–18°C | 12–26°C | 15–30°C | 14–28°C | 11–26°C | 3–17°C | -3–10°C | -6–5°C |
| Feels like | -13–-1°C | -14–0°C | -9–6°C | -4–11°C | 2–17°C | 10–26°C | 14–30°C | 13–28°C | 9–24°C | 0–14°C | -7–6°C | -11–1°C |
| Precipitation | 26mm 7 days | 36mm 9 days | 53mm 9 days | 58mm 10 days | 116mm 13 days | 48mm 6 days | 39mm 5 days | 34mm 4 days | 26mm 4 days | 34mm 6 days | 32mm 6 days | 22mm 6 days |
| Sunshine | 7.9h ☀︎ 82% | 9.1h ☀︎ 85% | 10.1h ☀︎ 84% | 10.9h ☀︎ 82% | 11.7h ☀︎ 81% | 13.0h ☀︎ 87% | 13.1h ☀︎ 89% | 12.3h ☀︎ 90% | 11.2h ☀︎ 90% | 9.7h ☀︎ 87% | 8.5h ☀︎ 85% | 7.8h ☀︎ 83% |
| Wind | W · 16 km/h | W · 17 km/h | W · 16 km/h | W · 17 km/h | W · 16 km/h | W · 16 km/h | W · 16 km/h | W · 15 km/h | W · 15 km/h | W · 15 km/h | W · 15 km/h | SW · 16 km/h |
| Humidity (%) | 61% | 61% | 61% | 58% | 64% | 52% | 50% | 50% | 47% | 53% | 57% | 56% |
| Day length | 9.7h | 10.7h | 12.0h | 13.3h | 14.4h | 15.0h | 14.7h | 13.7h | 12.4h | 11.1h | 10.0h | 9.4h |
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